POE Foam vs XPP
Polymer · grade comparison
POE Foam and XPP are both polymer grades. POE Foam is the stronger of the two: tensile strength 2 MPa (0.261 ksi) against 0.65 MPa (0.0943 ksi) for XPP, about 177% more. POE Foam is the more ductile: elongation 220% versus 25% for XPP. XPP is lighter (0.06 g/cm³ vs 0.15 g/cm³ for POE Foam) and XPP is stiffer (0.02 GPa vs 0.01 GPa). On the shop floor, XPP welds better (very good vs good).
POE FoamChoose it when strength drives the design, or when the part is bent, formed or impact-loaded.
XPPChoose it when weight is the constraint, or when the part sees heat.
POE Foam vs XPP: propertiesHow to read these bars
- One bar per material. A full bar is the highest value among all polymer grades in the FabDigit library; each bar is drawn as a share of that.
- The better value (by the usual engineering direction) is in bold. Rows with no direction — density, thermal conductivity — have no bold.
- Values are typical room-temperature figures for the condition named on each card.
- Confirm against the certified mill or resin datasheet before design release.
How to read these bars
- One bar per material. A full bar is the highest value among all polymer grades in the FabDigit library; each bar is drawn as a share of that.
- The better value (by the usual engineering direction) is in bold. Rows with no direction — density, thermal conductivity — have no bold.
- Values are typical room-temperature figures for the condition named on each card.
- Confirm against the certified mill or resin datasheet before design release.
Mechanical
Strength, stiffness, ductility and hardness at room temperature.
Elastic (Young's) Modulus
Tensile Strength (Ultimate)
Elongation at Break
Compressive Strength
Compressive Modulus
Hardness, Shore A
Tear Strength
Compression Set (22 h, 70 °C)
Shear Modulus
Flexural Strength
Flexural Modulus
Shear Strength
Same in both: Poisson's Ratio 0.15
Physical
Density and transition temperatures.
Density
Melting Temperature (Tm)
Glass Transition (Tg)
Same in both: Water Absorption (24 h) 0.5% · Water Absorption (Saturation) 2%
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Specific Heat Capacity
Thermal Expansion (CTE, 20–100 °C)
Max Service Temperature (continuous)
Min Service Temperature
Limiting Oxygen Index
Max Service Temperature (short-term)
Electrical
Conductivity and insulation.
Electrical Resistivity
Dielectric Constant (1 MHz)
Dissipation Factor (1 MHz)
Volume Resistivity
Surface Resistivity
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
UV / Weathering Resistance
Corrosion Resistance
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Weldability
Formability (cold)
Mold Shrinkage
Melt Flow Rate
Processing Melt Temperature (typ.)
Mold Temperature (typ.)
Same in both: Machinability 60 / 100
Sustainability
Primary-production footprint per kilogram.
Embodied Energy (primary production)
Embodied Carbon (primary production)
Embodied Water
Typical Recycled Content
Common Calculations
Ratios derived from the values above.
Specific Strength (UTS / density)
Specific Stiffness (E / density)
Thermal Diffusivity
Same in both: Thermal Shock Resistance Index 0
Strength versus weight
Yield strength against density for every polymer grade in the FabDigit library; the compared grades are highlighted. Up and left is stronger for its weight.
Manufacturing and finishing
| Capability | POE Foam | XPP |
|---|---|---|
| Default condition | — | — |
| Relative cost | $$$ Premium | $$$ Premium |
| Min. machined wall | — | — |
| Best machined surface | — | — |
POE Foam vs XPP — frequently asked
Is POE Foam stronger than XPP?
Yes. POE Foam has a typical tensile strength of 2 MPa (0.261 ksi) against 0.65 MPa (0.0943 ksi) for XPP — about 177% more.
Which is cheaper, POE Foam or XPP?
Both sit in the same relative cost tier ($$$, premium); the part price will be decided by machining time, tolerance and quantity rather than by the material.
Which welds better, POE Foam or XPP?
XPP. Its weldability rates very good (70/100) against good (55/100) for POE Foam.
Ready to make it?
Upload a CAD file and FabDigit prices the part in POE Foam and XPP side by side — material, machining time, tolerance and finish in one quote. Certified material data ships with the order on request.
Typical handbook values for the conditions named above, normalised for comparison. Hardness on non-Brinell scales is converted approximately for charting only. Request certified data with your order for design-critical properties.